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The pygmy marmoset weighs approximately 3.5 ounces and measures less than 5 inches in length, making it the smallest monkey in the world. In mid-March, Saudi Arabia withdrew its ambassador to ...

This article is a selection from the March 2023 issue of Smithsonian magazine Children enjoy one of New York City’s first sets of monkey bars c. 1935. George Rinhart via Getty Images Young ...

The world’s smallest monkey is called the pygmy marmoset, and it is, predictably, very tiny, just a little scoop of fur. It likes to eat the sticky resin found in tree bark, known as gum ...